X-RAY MOVING IMAGE RADIOGRAPHING APPARATUS

• US 20120277581A1
• Filed: 07/05/2012
• Published: 11/01/2012
• Est. Priority Date: 04/14/2008
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Urushiya, Hiroyuki, Tsujii, Osamu
• Granted Patent: US 8,842,807 B2
• Time in Patent Office: Days
• US Class Current: 600/427
• CPC Class Codes: A61B 6/12 Arrangements for detecting or locating foreign bodies
• CPC Class Codes: A61B 6/4028 resulting in acquisition of views from substantially different positions, e.g. EBCT
• CPC Class Codes: A61B 6/405 Source units specially adapted to modify characteristics of the beam during the data acquisition process A61B6/4021, A61B6/4035 take precedence
• CPC Class Codes: A61B 6/4291 the detector being combined with a grid or grating
• CPC Class Codes: A61B 6/4417 related to combined acquisition of different diagnostic modalities
• CPC Class Codes: A61B 6/4441 the rigid structure being a C-arm or U-arm
• CPC Class Codes: A61B 6/463 characterised by displaying multiple images or images and diagnostic data on one display
• CPC Class Codes: A61B 6/481 involving the use of contrast agents
• CPC Class Codes: A61B 6/482 involving multiple energy imaging
• CPC Class Codes: A61B 6/504 for diagnosis of blood vessels, e.g. by angiography
• CPC Class Codes: A61B 6/5217 extracting a diagnostic or physiological parameter from medical diagnostic data
• CPC Class Codes: A61B 6/5247 combining images from an ionising-radiation diagnostic technique and a non-ionising radiation diagnostic technique, e.g. X-ray and ultrasound
• CPC Class Codes: A61B 6/547 involving tracking of position of the device or parts of the device

Abstract

An X-ray moving image radiographing apparatus includes an X-ray detector configured to detect an X-ray transmitting through a subject to acquire a subject image, an image processing unit configured to process an X-ray radiographic image output from the X-ray detector, and a control unit configured to capture a mask image by selectively scanning X-ray focal positions of an X-ray source which has a plurality of X-ray focal points so that an X-ray incident angle varies with respect to a target point of the subject, and to capture a moving image after a predetermined work is performed on the subject by selectively scanning X-ray focal positions of the X-ray source similar to the scanning operation used to capture the mask image.

Claims

1. A control apparatus for controlling an X-ray source having a plurality of X-ray focal points, the control apparatus comprising:

a first acquisition unit configured to acquire an endoscopic image from an endoscope inserted in a subject;

a control unit configured to select an X-ray focal point from the plurality of X-ray focal points and to control the X-ray source to irradiate the subject with the X-ray from the selected X-ray focal point;

a second acquisition unit configured to acquire an X-ray image from a X-ray detector, corresponding to the selected focal point; and

a display control unit configured to display on a display unit the endoscopic image as a motion image and the X-ray image as a motion image.

2. The control apparatus of claim 1, further comprising:

a storage unit configured to store a correspondence relationship between the X-ray image and the X-ray focal point position as a table.

3. The control apparatus of claim 1, wherein

the control unit is further configured to determine atop end of the endoscope as the target point of the subject based a change in the X-ray image.

4. The control apparatus of claim 1, further comprising:

an image processing unit configured to generate an energy subtraction image from a plurality of X-ray images for which each of the irradiations are different in X-ray energy.

5. The control apparatus of claim 1, wherein

the control unit is configured to acquire, based on the change in the subject, a region where contrast medium is in the subject, and to select a plurality of focal points corresponding to the region.

6. An X-ray imaging apparatus comprising:

a control apparatus of claim 1; and

a X-ray detector defining a 2-dimensional detection area configured to detect an X-ray to generate a X-ray image.

7. The X-ray imaging apparatus of claim 1, further comprising:

a display unit configured to display the X-ray image and the endoscopic image.

8. The X-ray imaging apparatus of claim 1, further comprising a X-ray source having a plurality of X-ray focal points.

9. The X-ray imaging apparatus of claim 1, further comprising:

an X-ray detector defining a 2-dimensional detection area and configured to detect an X-ray to generate a X-ray image;

a X-ray source having a plurality of X-ray focal points;

a C-arm member coupled to the X-ray detector at one end and coupled to the X-ray source at another end, configured to rotate the X-ray detector and the X-ray source around the subject.

10. The X-ray imaging apparatus of claim 1, further comprising:

an endoscope having a shape insertable into the subject, configured to obtain an endoscopic image inside the subject.

11. A method for controlling an X-ray source having a plurality of X-ray focal points, the method comprising;

acquiring an endoscopic image from an endoscope inserted in a subject;

selecting an X-ray focal point from the plurality of X-ray focal points and controlling the X-ray source to irradiate the subject with the X-ray from the selected X-ray focal point;

acquiring an X-ray image from a X-ray detector, corresponding to the selected focal point; and

controlling to display on a display unit the endoscopic image as a motion image and the X-ray image as a motion image.

12. A computer-readable storage medium storing a computer-executable program including instructions to cause at least one computer to execute a process for controlling an X-ray source having a plurality of X-ray focal points, the program comprising:

instructions for acquiring an endoscopic image from an endoscope inserted in a subject;

instructions for selecting an X-ray focal point from the plurality of X-ray focal points and to control the X-ray source to irradiate the subject with the X-ray from the selected X-ray focal point;

instructions for acquiring an X-ray image from a X-ray detector, corresponding to the selected focal point; and

instructions for controlling to display on a display unit the endoscopic image as a motion image and the X-ray image as a motion image.